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- Title
Comparing results of real-scale time MHD modeling with observational data for first flare M 1.9 in AR 10365.
- Authors
Borisenko, Alexey Vasilevich; Podgorny, Igor Maksimovich; Podgorny, Alexander Igorevich
- Abstract
As shown in the first results of MHD simulations in the real scale of time, above the active region (AR) 10365, during the first flare M 1.9 (05/26/2003 05:34) at a height of 16-18 mm (lower corona), a singular line of magnetic field appears. The local maximum of the current density is situated on this singular line. The magnetic field in the vicinity of this singular line is the superposition of an X-type magnetic configuration and a divergent magnetic field. The accumulation of magnetic energy for solar flare with current sheet creation takes place near this singular line due to magnetic field deformation by disturbances in the X-type configuration in spite of the presence of overlaid diverging magnetic configuration. The magnetic configuration is so complicated that the singular line can be found only by using specially developed graphical system of search. The position of singular line coincides with position of source of flare radio emission at the frequency 17 GHz above AR 10365 measured by Nobeyama Radioheliograph (NoRH). Also, MHD simulation shows appearance of the singular line, in the vicinity of which X-type configuration dominates. However, apparently due to small disturbance, propagating from the photosphere, sufficient magnetic energy was not accumulated in this configuration, so the NoRH does not show the flare source of emissionat the frequency 17GHz in the place, where this singular line is situated.
- Subjects
SIMULATION methods &; models; MAGNETIC fields; OPERATIONS research; SYSTEMS engineering; SOLAR radio emission
- Publication
Open Astronomy, 2022, Vol 31, Issue 1, p58
- ISSN
2543-6376
- Publication type
Article
- DOI
10.1515/astro-2022-0008